250 striaght 6 vibration?? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

gmcstep · 07-14-2003, 09:09 PM

i have a 71 gmc step side with a 250. it has a bad vibration just over idle thru the engine. it makes no noise and runs perfect otherwise. but if you just touch the gas pedal lightly and hold it it vibrates pretty badly. any ideas????

**BIG ORANGE** · 07-14-2003, 10:45 PM

Might be the flywheel,I got a great running 72 model 250 6cly. for sale for a 100.00 I dont usally hang on to them,I like V8 best!

gmcstep · 07-14-2003, 11:51 PM

i used the same flywheel on the old engine and no vibration

07-14-2003, 09:09 PM	#1
gmcstep Registered User Join Date: Feb 2003 Location: ashtabula,ohio Posts: 132	250 striaght 6 vibration?? i have a 71 gmc step side with a 250. it has a bad vibration just over idle thru the engine. it makes no noise and runs perfect otherwise. but if you just touch the gas pedal lightly and hold it it vibrates pretty badly. any ideas????

07-14-2003, 10:45 PM	#2
BIG ORANGE Senior Member Join Date: Oct 2001 Location: Lancaster S.C. Posts: 4,745	Might be the flywheel,I got a great running 72 model 250 6cly. for sale for a 100.00 I dont usally hang on to them,I like V8 best! __________________ Things happen for a reason!

07-14-2003, 11:51 PM	#3
gmcstep Registered User Join Date: Feb 2003 Location: ashtabula,ohio Posts: 132	flywheel i used the same flywheel on the old engine and no vibration



Register or Log In To remove these advertisements.

Register or Log In To remove these advertisements.